diff --git a/manifests/swh/deploy/worker/swh_lister_github.pp b/manifests/swh/deploy/worker/swh_lister_github.pp
index 5fc7d4a0..5868de01 100644
--- a/manifests/swh/deploy/worker/swh_lister_github.pp
+++ b/manifests/swh/deploy/worker/swh_lister_github.pp
@@ -1,40 +1,40 @@
 # Deployment for swh-lister-github
 class profile::swh::deploy::worker::swh_lister_github {
   $concurrency = hiera('swh::deploy::worker::swh_lister_github::concurrency')
   $loglevel = hiera('swh::deploy::worker::swh_lister_github::loglevel')
   $task_broker = hiera('swh::deploy::worker::swh_lister_github::task_broker')
 
   $config_file = '/etc/softwareheritage/lister-github.yml'
-  $config = hiera('swh::deploy::worker::swh_lister_github::config')
+  $config = hiera_hash('swh::deploy::worker::swh_lister_github::config')
 
   $task_modules = ['swh.lister.github.tasks']
   $task_queues = ['swh_lister_github_incremental', 'swh_lister_github_full']
 
   $packages = ['python3-swh.lister.github']
 
   package {$packages:
     ensure => 'installed',
   }
 
   ::profile::swh::deploy::worker::instance {'swh_lister_github':
     ensure       => present,
     concurrency  => $concurrency,
     loglevel     => $loglevel,
     task_broker  => $task_broker,
     task_modules => $task_modules,
     task_queues  => $task_queues,
     require      => [
       Package[$packages],
       File[$config_file],
     ],
   }
 
   # Contains passwords
   file {$config_file:
     ensure  => 'present',
     owner   => 'swhworker',
     group   => 'swhdev',
     mode    => '0640',
     content => inline_template('<%= @config.to_yaml %>'),
   }
 }